get_row_colr.c File Reference

#include <grass/gis.h>
#include "G.h"

Include dependency graph for get_row_colr.c:

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Functions
int	G_get_raster_row_colors (int fd, int row, struct Colors *colors, unsigned char *red, unsigned char *grn, unsigned char *blu, unsigned char *nul)
	Reads a row of raster data and converts it to red, green and blue components according to the colors parameter. This provides a convenient way to treat a raster layer as a color image without having to explicitly cater for each of CELL, FCELL and DCELL types. More...

Function Documentation

int G_get_raster_row_colors	(	int	fd,
		int	row,
		struct Colors *	colors,
		unsigned char *	red,
		unsigned char *	grn,
		unsigned char *	blu,
		unsigned char *	nul
	)

Reads a row of raster data and converts it to red, green and blue components according to the colors parameter. This provides a convenient way to treat a raster layer as a color image without having to explicitly cater for each of CELL, FCELL and DCELL types.

Parameters

fd
row
colors
red
grn
blu
nul

Returns

int

Definition at line 24 of file get_row_colr.c.

References dialogs::cols, fd, G__::fileinfo, G_get_raster_row(), G_incr_void_ptr(), G_is_null_value(), G_lookup_raster_colors(), G_raster_size(), fileinfo::map_type, main::set, tools::size, dialogs::type, and G__::window.